Alright, let's work through 6489 times 3192 step by step
6489 × 3192 = 3192 × (6489)
+ 3192 × 9 which equals 28728
+ 3192 × 80 yielding 255360
+ 3192 × 400 giving us 1276800
+ 3192 × 6000 resulting in 19152000

= 20712888
